183 lines
5.1 KiB
Diff
183 lines
5.1 KiB
Diff
Rely on the compiler to be correctly set up to generate
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appropriate code for the target variant.
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This exposes the Thumb option, as it is no longer auto-selected.
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The "Use BX" no longer depends on supported CPU to be selected,
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so it now defaults to 'n' as it shall work by default on CPUs
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that do not have BX.
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Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
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Cc: Khem Raj <raj.khem@gmail.com>
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Cc: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Cc: Carmelo AMOROSO <carmelo.amoroso@st.com>
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---
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Rules.mak | 19 -------
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extra/Configs/Config.arm | 125 ++--------------------------------------------
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2 files changed, 5 insertions(+), 139 deletions(-)
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--- a/Rules.mak
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+++ b/Rules.mak
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@@ -332,25 +332,6 @@ ifeq ($(TARGET_ARCH),arm)
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OPTIMIZATION+=-fstrict-aliasing
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CPU_CFLAGS-$(ARCH_LITTLE_ENDIAN)+=-mlittle-endian
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CPU_CFLAGS-$(ARCH_BIG_ENDIAN)+=-mbig-endian
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- CPU_CFLAGS-$(CONFIG_GENERIC_ARM)+=
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- CPU_CFLAGS-$(CONFIG_ARM610)+=-mtune=arm610 -march=armv3
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- CPU_CFLAGS-$(CONFIG_ARM710)+=-mtune=arm710 -march=armv3
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- CPU_CFLAGS-$(CONFIG_ARM7TDMI)+=-mtune=arm7tdmi -march=armv4t
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- CPU_CFLAGS-$(CONFIG_ARM720T)+=-mtune=arm7tdmi -march=armv4t
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- CPU_CFLAGS-$(CONFIG_ARM920T)+=-mtune=arm9tdmi -march=armv4t
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- CPU_CFLAGS-$(CONFIG_ARM922T)+=-mtune=arm9tdmi -march=armv4t
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- CPU_CFLAGS-$(CONFIG_ARM926T)+=-mtune=arm9e -march=armv5te
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- CPU_CFLAGS-$(CONFIG_ARM10T)+=-mtune=arm10tdmi -march=armv5t
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- CPU_CFLAGS-$(CONFIG_ARM1136JF_S)+=-mtune=arm1136jf-s -march=armv6
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- CPU_CFLAGS-$(CONFIG_ARM1176JZ_S)+=-mtune=arm1176jz-s -march=armv6
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- CPU_CFLAGS-$(CONFIG_ARM1176JZF_S)+=-mtune=arm1176jzf-s -march=armv6
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- CPU_CFLAGS-$(CONFIG_ARM_SA110)+=-mtune=strongarm110 -march=armv4
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- CPU_CFLAGS-$(CONFIG_ARM_SA1100)+=-mtune=strongarm1100 -march=armv4
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- CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=$(call check_gcc,-mtune=xscale,-mtune=strongarm110)
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- CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=-march=armv5te -Wa,-mcpu=xscale
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- CPU_CFLAGS-$(CONFIG_ARM_IWMMXT)+=-march=iwmmxt -Wa,-mcpu=iwmmxt -mabi=iwmmxt
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- CPU_CFLAGS-$(CONFIG_ARM_CORTEX_M3)+=-mcpu=cortex-m3
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- CPU_CFLAGS-$(CONFIG_ARM_CORTEX_M1)+=-mcpu=cortex-m1
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CPU_CFLAGS-$(COMPILE_IN_THUMB_MODE)+=-mthumb
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endif
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--- a/extra/Configs/Config.arm
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+++ b/extra/Configs/Config.arm
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@@ -30,129 +30,14 @@ config CONFIG_ARM_EABI
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endchoice
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-choice
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- prompt "Target Processor Type"
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- default CONFIG_GENERIC_ARM
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- help
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- This is the processor type of your CPU. This information is used for
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- optimizing purposes. To build a library that will run on all ARMCPU
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- types (albeit not optimally fast), you can specify "Generic Arm" here.
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- If you pick anything other than "Generic Arm", there is no guarantee
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- that uClibc will even run on anything other than the selected
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- processor type.
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-
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- Here are the settings recommended for greatest speed:
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- - "Generic Arm" select this if your compiler is already setup to
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- optimize things properly, or if you want to run on pretty much
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- everything, or you just don't much care.
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- - For anything else, pick the ARM core type that best matches the
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- cpu you will be using on your device.
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-
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- If you don't know what to do, choose "Generic Arm".
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-
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-config CONFIG_GENERIC_ARM
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- bool "Generic Arm"
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-
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-config CONFIG_ARM610
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- bool "Arm 610"
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- select ARCH_HAS_MMU
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-
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-config CONFIG_ARM710
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- bool "Arm 710"
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- select ARCH_HAS_MMU
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-
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-config CONFIG_ARM7TDMI
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- bool "Arm 7TDMI"
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- select ARCH_HAS_NO_MMU
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- select HAS_THUMB
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-
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-config CONFIG_ARM720T
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- bool "Arm 720T"
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- select ARCH_HAS_MMU
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- select HAS_THUMB
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-
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-config CONFIG_ARM920T
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- bool "Arm 920T"
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- select ARCH_HAS_MMU
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- select HAS_THUMB
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-
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-config CONFIG_ARM922T
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- bool "Arm 922T"
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- select ARCH_HAS_MMU
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- select HAS_THUMB
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-
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-config CONFIG_ARM926T
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- bool "Arm 926T"
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- select ARCH_HAS_MMU
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- select HAS_THUMB
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-
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-config CONFIG_ARM10T
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- bool "Arm 10T"
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- select ARCH_HAS_MMU
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- select HAS_THUMB
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-
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-config CONFIG_ARM1136JF_S
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- bool "Arm 1136JF-S"
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- select ARCH_HAS_MMU
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- select HAS_THUMB
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-
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-config CONFIG_ARM1176JZ_S
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- bool "Arm 1176JZ-S"
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- select ARCH_HAS_MMU
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- select HAS_THUMB
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-
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-config CONFIG_ARM1176JZF_S
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- bool "Arm 1176JZF-S"
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- select ARCH_HAS_MMU
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- select HAS_THUMB
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-
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-config CONFIG_ARM_CORTEX_M3
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- bool "Arm Cortex-M3"
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- select ARCH_HAS_NO_MMU
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- select FORCE_THUMB
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-
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-config CONFIG_ARM_CORTEX_M1
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- bool "Arm Cortex-M1"
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- select ARCH_HAS_NO_MMU
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- select FORCE_THUMB
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-
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-config CONFIG_ARM_SA110
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- bool "Intel StrongArm SA-110"
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- select ARCH_HAS_MMU
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- select HAS_THUMB
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-
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-config CONFIG_ARM_SA1100
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- bool "Intel StrongArm SA-1100"
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- select ARCH_HAS_MMU
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- select HAS_THUMB
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-
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-config CONFIG_ARM_XSCALE
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- bool "Intel Xscale"
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- select ARCH_HAS_MMU
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- select HAS_THUMB
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-
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-config CONFIG_ARM_IWMMXT
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- bool "Intel Xscale With WMMX PXA27x"
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- select ARCH_HAS_MMU
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- select HAS_THUMB
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-
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-endchoice
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-
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-config HAS_THUMB
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- bool
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-
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-config FORCE_THUMB
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- bool
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- select HAS_THUMB
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- select COMPILE_IN_THUMB_MODE
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- select USE_BX
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-
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config COMPILE_IN_THUMB_MODE
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- bool
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+ bool "Build using Thumb mode"
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+ select USE_BX
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+ help
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+ Say 'y' here to force building uClibc in thumb mode.
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+ Say 'n' to use your compiler's default mode.
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config USE_BX
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bool "Use BX in function return"
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- default y
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- depends on HAS_THUMB
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help
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Use BX instruction for THUMB aware architectures.
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